RE: [Vxl-users] VIL: can't compile demo programme

[Ian S. <ian...@st...>]

> From: Torsten Wiebesiek
> ...
> ColourImage.cxx:7: implicit declaration of function `int
> ...
> I tried to create the class documentation, but unfortunately
> the Doxyfiles
> are missing.

I am assuming that you are using a recent CVS snapshot.

The relevant Doxyfiles do exist, but they are hidden. You can use
/vxl/doc/Doxyfile_for_vxl_doc_rules

Alternatively, there is a nightly structured build of the documentation on
http://www.isbe.man.ac.uk/public_vxl_doc/ . You can use the search engine
there.

About vil_load_rgb(). It looks like a mistake, or a hang-over from an
earlier version, but I can't find vil_load_rgb anywhere in the repository. I
suspect the correct function name should be vil_load(). I'll fix the book.

> 'if (buf(x,y).R()<200 && buf(x,y).G()<200 &&
> buf(x,y).B()<200)'. This seems
> to be a mistake in the book.

You right there as well. You can also have buf(x,y).r < 200 , etc.

> int main () {
>   vil_image img = vil_load("foo.bmp");
>   vil_memory_image_of<vil_rgb_byte> buf(img);
>   vil_save(buf,"foo_colour.bmp");
> }
>
> The colour channels of the saved bitmap "foo_colour.bmp" are swaped
> after calling this programme. I have changed the formats from
> bmp to ppm
> and the programme created a copy of the colour ppm image.

Hmm - I don't use bmp much now, but I guess there could be a bug in the bmp
loading.

Thanks for the comments
Ian.